The same can be said of arcade cards, which are similar in function to E-Reader, but primarily used in Japan. Cards you can get from stores and scan them onto an arcade game. Then there are refill cards, which are more like membership cards... or phone cards that are still very popular in Japan.
About original title, the cards that come with Amiibo or Skylanders (and to an extent, Transformers) are very interesting and it makes me wish that they were also sold separately either as a set or even as packs... or as inserts in packs. That is one thing I am interested in about Amiibo or Skylanders is the cards and not the figures themselves.
